I just got a new '09 2dr SE coupe 5spd and want to swap out the Kumho Solus tires cuz they will suck in Chicago winters but while at it can I go to taller sidewalls with out too much upsetting the setup? 205/50-16 is stock.

The 60's are only 10 % taller than the 50's. You should have plenty of room for them. It will make your speed faster than your speedometer is reading, but speedometers tend to be 5 mph slow anyway so it should work out well.